This study was performed to evaluate histopathologic and physical characteristics of anterior capsule during capsulorhexis with a new high-frequency diathermy.The authors investigated the histopathologic characteristics of anterior capsule according to coagulation time and anterior capsular diameter in diathermy capsulorhesxis(DC),comparing with those in continuous curvilinear capsulorhexis(CCC). Thermally induced histopathologic alter-ation was localized at anterior capsule with coagulation for 0.5 second, while it was extended into cortex with coagulation for 2 seconds.When capsulorhexis was performed with diameter of 6 mmand the margin was pulled with iris retractor,anterior capsular edge was fully extended both in CCC and DC.But with diameter of 3.5 mm,DC mostly led to tear of capsular edge on its extension,while CCC permitted full extension of anterior capsular edge.These results suggest that strength of anterior capsular edge in DC is inferior to that in CCC.However diathermy capsulorhexis is a useful alternative technique in cases,which CCC is difficult to perform,such ashypermature or congenital cataracts.
Capsulorhexis* ; Cataract ; Diathermy* ; Iris

Tissue temperatures were measured by a thermistor-thermometer, at suprachoroid, inner retinal surface and intravitreous portion (1mm deep), during diathermy applications on the scleral surfaces of rabbit eyes. Castroviejo's Electro-surgical Ophthalmic unit Model S-5 was used and power intensity(current) was fixed to 2, and diathermy was applied on the sclera 3mm, 2mm, and 1mm from and above the measuring points. Measurements were performed in the following groups: Group 1: Spark gap power 2. duration of application 2 sec. Group 2: Spark gap power 2. duration of application 3 sec. Group 3: Spark gap power 3. duration of application 2 sec. Group 4: Spark gap power 3. duration of application 3 sec. Maximum rise of temperature was 20.0 degrees C at suprachoroid, 16.8 degrees C at inner retinal surface and 6.6 degrees C at vitreous in Group 4. Temperature rise in vitreous was much lower than that in suprachoroid and inner retinal surface (table II, which revealed percentage of average rise per tissue temperature before diathermy). Highest measuring temperature at inner retinal surface in this experiment was under 60 degrees C, at which vitreous collagen fibrils may coagulate.
Collagen ; Diathermy* ; Retinaldehyde ; Sclera

The extensibility of the albino rabbit sclera was measured after cryoapplication and diathermy on the equator of sclera and these extensibilities were compared with normal control. For cryoapplication, 95% alcohol and solid carbon dioxide mixture was used and this cryoprobe was applied on the equator of rabbit sclera of right eye for 3 seconds. Castroviejo apparatus was used for diathermy and nonperforating surface diathermy was performed on the equator of rabbit sclera of left eye for one second with current of 30mA. Immediately after cryoapplication and diathermy, the extension rates of sclera were 2.556% and 6.039%, respectively. The extension rates of one week after cryoapplication and diathermy were 3.234 % and 4.127%, respectively. The extension rate of two weeks after diathermy was 3.489%. Normal control was 3.055%.
Carbon Dioxide ; Diathermy* ; Sclera*

Artificial chorioretinal inflammation was produced by the application of the cryothermy, diathermy, or photocoagulation in man. The inflammatory reactions were followed-up by fluorescein angiography. Inflammatory lesion showed fluorescein leakage and pooling at the first postoperative day Cessation of leakage was seen niter the 10th postoperative dey regardless of method of inflammation production. Pigment stippling was seen at about 4-5 days after moderate to heavy cryo-application, but about 11-12 days after moderate intensity of photocoagulation and diathermy.
Diathermy ; Fluorescein Angiography ; Fluorescein* ; Inflammation* ; Light Coagulation

Endoscopic incision therapy was applied to two patients with postoperative anast-omotic stenosis. Radial diathermy incision was performed by needle knife papillot-ome using cutting current. Tne anastomotic stenosis was characteristic of short fibrotic segment and frequent restenosis after dilatation. An sufficient caliber and smooth, supple wall at the site of the stenosis was produced by incisional therapy by needle knife papillotome using cutting current. Clinical symptoms and endoscopic findings were improved after endoscopic incision. It is concluded that endoscopic incisional therapy seems to be safe and effective method for the treatment of anastomotic stenosis after gastrointestinal operation.
Constriction, Pathologic* ; Diathermy ; Dilatation ; Humans ; Needles*

Endoscopic incision therapy was applied to two patients with postoperative anast-omotic stenosis. Radial diathermy incision was performed by needle knife papillot-ome using cutting current. Tne anastomotic stenosis was characteristic of short fibrotic segment and frequent restenosis after dilatation. An sufficient caliber and smooth, supple wall at the site of the stenosis was produced by incisional therapy by needle knife papillotome using cutting current. Clinical symptoms and endoscopic findings were improved after endoscopic incision. It is concluded that endoscopic incisional therapy seems to be safe and effective method for the treatment of anastomotic stenosis after gastrointestinal operation.
Constriction, Pathologic* ; Diathermy ; Dilatation ; Humans ; Needles*

Cleft palate and congenital alveolar synechia is a rare syndrome. Only eight cases have been previously reported. It consists of a spectrum of facial anomalies always including cleft palate and congenital alveolar synechiae without other abnormalities. This report described an unusual case of congenital alveolar synechial band spanning posterior alveolar of the two jaws with cleft palate. Previously reported cases showed bilaterally or anteriorly located fibrous band. In our department, a new born revealed unilateral posterior synechia. Under brief intravenous sedation, synechium was divided using bipolar diathermy in the nursery at 3 days of age because of poor feeding. This division allowed full jaw opening after brief passive exercise. The patient is growing and maturing as expected with no complications. This patient is supposed to be the first reported case of isolated unilateral alveolar synechium combined with cleft palate in the worldwide.
Cleft Palate ; Diathermy ; Humans ; Jaw ; Nurseries

In order to investigate the effects of diathermy and cryosurgery on the scleral shrinkage, nonperforating surface diathermy and cryocautery were applied in rabbits eyes. The premarked scleral segments were measured by corneal microscope with micrometer, and the resultant elevation of the intraocular pressures was pressures was measured by Schiotz tonometer. In the eyes treated by 10 diathermy in 5 X 3mm area, average 20.1% of scleral shrinkage was observed. There was no significant difference between shrinkages in the meridional and latitudinal directions. In the eyes treated by cryopencil no significant changes were found. Diathermy applications in 3 X 10mm area in the sclera induced 36.9% increase in the intraocular pressure which lasted about 9 minutes. On the other hand, cryoapplication did not produce such an elevation in ocular tension.
Cryosurgery ; Diathermy* ; Hand ; Intraocular Pressure ; Rabbits* ; Sclera

Cryotherapy is blamed for inducing or aggravating PVR, by releasing retinal pigment epithelial(RPE) cells. These are based on the fact that PVR rarely occurs in non-operated eye, and many of PVR patients have received cryotherapy during surgery. Nontheless, in eyes with diathermy also developed PVR, and although there have been many experiments, the effect of cryotherapy on inducing PVR was not proven experimentally in the living eye. We made retinal tears in the living rabbit eyes, and applied cryotherapy on one eye of each rabbit. The result was compared histopathologically with noncryothermized control eye. There was no statistically significant difference between the two groups concerning the migration of RPE, and the proliferation of RPE. Although the formation of epiretinal membrane was more obvious in the cryothermized group, the difference was not statistically significant.
Cryotherapy* ; Diathermy ; Epiretinal Membrane ; Humans ; Retinal Perforations ; Retinaldehyde

Rhinogenic headache is a headache or facial pain syndrome secondary to mucosal contact points or rhinogenic causes in the absence of rhinitis/sinusitis. The authors report a case of atypical rhinogenic headache in a 72-year-old woman who presented with recurrent right side headache, which was aggravated by nasal breathing. A computed tomographic scan showed no evidence of rhinosinusitis and mucosal contact points. However, during nasal endoscopy, she had multiple pain-trigger points on the septum and lateral nasal wall. Treatment involved endoscopic reduction and radiofrequency diathermy of the pain-trigger point. Postoperatively, the headache was successfully relieved, and there was no evidence of recurrence. In this article, the authors present surgical option for the treatment of atypical rhinogenic headache.
Aged ; Diathermy* ; Endoscopy ; Facial Neuralgia ; Female ; Headache* ; Humans ; Recurrence ; Respiration